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#1
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87 300DT no start
over the past my car has been getting a little hard to start when cold, it didn't take long till it began to give me a little trouble starting when it got warm, it has steadily gotten worse to the point it won't even start, about the time the starting issue started, i noticed a light cloud of smoke at idle, and now it pours smoke out at idle, it's also down on power, does this sound like the IP? I don't think it's glow plugs since the light stays on about 7 sec's, I know my ford's won't turn the light on at all if one goes out, plus it is hard to start hot now.
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#2
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Have the injector nozzles ever been replaced? They could be dirty or worn. I assume you have checked your fuel filters. I have clear fuel hose on mine, so if I have a problem, I can quickly see if it is related to fuel delivery, or air in the system. Although from the injection pump on, you obviously can't have clear hose, since the lines are metal.
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1987 Mercedes 300D ~200K (Greasecar & Biodiesel) 1993 Ford F-250 7.3 IDI diesel 165K (Biodiesel) 1996 Thomas/International Bus with DT466 engine |
#3
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I have done all the basics like fuel and air filters, I actually do have clear fuel lines up to the injection pump and they have no air, I have no idea if the injectors are coked up or not, I guess I should remove one and see, would that make it hard to start?
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#4
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I went out and took out a couple of injectors, they were coked pretty bad, I assume it is supposed to be smooth shiny metal on the tip, the surface area exposed to to the pre chamber looked like someone put a few drops of engine oil on them and put a torch to it. Can I clean them or should they be replaced? also, should I replace the prechamber, I heard you can buy those to.
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#5
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Was this car run on WVO/SVO? If so, a post pics of the injectors please.
Also make sure the prechamber ball bearing is still in place.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K |
#6
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yes it was run on wvo, I bought a kit and ran it for a while and discovered the oil never got above 115 degrees, I have put a 16FPHE but I think it was too late, where is this ball bearing located? and how do I remove the prechamber? When I get the car fixed, I am going to get a vegtherm to go with it. I'll take a pic tomorrow, don't know how to post them, but I will figure it out, I definantly know it's coked.
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#7
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Which brand kit did you buy?
__________________
1987 Mercedes 300D ~200K (Greasecar & Biodiesel) 1993 Ford F-250 7.3 IDI diesel 165K (Biodiesel) 1996 Thomas/International Bus with DT466 engine |
#8
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it was a grease car kit, it was a pain in the butt for me, low temps, air in the system, and low power (not saying all their kits are like this, this was just my experience) I put clear fuel line on it, the FPHE and put a different waterblock filter, one I can buy locally and not have to order every time I need a replacement. I also ran a return line back to the tank instead of the looped return. I think I did all this too late, I assume the low temps led to my coked injectors, I did get the car started before I took the injectors out, it is still is hard to start, could the IP timing be off or could it just be injectors. I thought the GP light was on about 7sec's but it is on about 4 sec's, is this normal?
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#9
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Quote:
If you wanted to the precombustion chambers could be removed and cleaned (possibly soaked in carburator dip) as the other members how to do it. You would only need to buy new ones if there is some sort of damage to them (they cost $80-$90 each on the internet). |
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